Threshing-machine.



V110.742,053. v PATENTED. 00120, 1903l l F. T. PARKHURST.

\ THRBSHING MAGHNB.

APPLIUATION FILED JUNE 24, 1902.

' 2 sums-SHEET 1.

I0 IODEL.

` PATENTED 0GT. 20, 1903 F. T. PARKHURST.

THRESHING MACHINE. APPLIGAT'ION FILED JUNE 24, 1902.

z sums-sanar a.

N0 IODEL.

UNITED STATES Patented October 20, 1903.

IPATENT OFFICE.

FRIEND TONY PARKHURST, OF MCLOUD, OKLAHOMA TERRITORY, ASSIGNOR OF ONE-HALF TO ARCHIBALD L. ANDERSON, OF MCLOUD, OKLAHOMA TERRITORY.

THRESHlNG-MACHINE.

SPECIFICATION forming part of Letters lPatent No. 742,058, dated October 20, 1903.

Application tiled J' une 24, 1902. Serial No. 113,034. (No model.)

` of the machine.

My invention has for its object not only to save grain, but also to prevent weeds 'and trash from being passed through into the tailings-spout, thus saving the power required to return such waste stuft vto the front end of the machine and threshing it over.

My invention consists in the combination, with a shoe having a discharge-spout, of two separate riddles mounted adjustably in said shoe and supports for` the same, one of said riddles (the one which is arranged over the spout) being concave, and a rotary beater arranged above the said concave riddle for the purpose of stirring and agitatin-g the straw passing over said riddle, so as to disentangle it from the loose grain which is permitted to pass through the riddle into the spout, while the straw, weeds, and trash are carried over the tail end.

In the accompanying drawings, Figure lis a sectional view taken longitudinally through the shoe of a threshing-machine equipped with my invention, a portion of the frame of the machine being shown in elevation and partly broken away. Fig. 2 is a perspective view of a shoe equipped with my improved riddles and the supports for the same, a portion of one side ofthe shoe having been broken away.

Corresponding parts in the figures are indicated by like characters of reference.

1 designates the shoe,'which is composed of the inclined bottom 2 and sides 3. AT he inclined bottom connects atpits rear or tail end to the transversely-arranged spout 4, which practically forms a part of the shoe and which has rigid connection with the tail-board 5.

Upon the inner' sides of the-side pieces 3 are arranged supporting-brackets which are composed of castings 6 and '7, located, respectively, at the front end of the shoe and on the line of the intersecting of the shoe' with the transverse spout 4. The said castings are provided with notches 8, adapted to receive and support the corners of the riddles placed therein, said riddles being designated by 9 and 10, respectively. The riddle 9 extends over the body of the shoe, and the front and rear corners of said riddle are adjusted in notches 8 of the brackets 6 and-7, as will Y 'has notches 8 formed in its rear as well asin its front side and is thus adapted to receive the front corners of the concave riddle 10, which is thus held in such a manner as to be capable of vertical adjustment to correspond with the position of the riddle 9. The rear or tail end of the riddle 10 has a downwardlybent flange l1 and is supported upon the upper edge of the tail-board 5, as will be seen in the drawings.

The screen or riddle 9 may be and is mounted in the desired position by simply springing it into or out of placein the notches provided for its reception. These riddles, as is well understood, are manufactured of sheet metal which is obviously possessed of sufticient resiliency to enable the screens to be Vthus adjusted, but at the same time having suflicient rigidity or` stiffness to maintain` them in position when adjusted.

Both of the riddles 9 and 10 are provided with perforations 12, formed by striking up lips or tongues 13 from the sheet metal of which said riddles are composed. By raising or depressing the said lips the size of the openings or perforations maybe varied, thus adapting the riddles for operation upon Va? rious kinds of grain.

When in operation the straw'passes over Y they riddle 9, the major part of the grain not already separated" therefrom will escape through the said riddle and into the shoe, the

IOO

riddle S) and onto the concave riddle lO it comes into engagement With a rotary beater composed of a shaft 14, having its bearings in the sides of the frame and equipped with fingers 15, that serve as beaters to stir and agitate the straw, thus disentangling theloose remaining grain Which may have been carried with the straw over the riddle 9. Not only this, but all Weeds and trash, a large portion of which usually escapes into the tailings-spout, is carried by this rotary beater over the tail end of the concave spout, thus preventing its return to the front end of the machine and saving the power required for such conveyance and `for rethreshing it.

It is to be understood that the shoe is to be so mounted as to receive the usual oscillating movement; but this being the ordinary construction I have not deemed it necessary to describe it in detail. The rotary beater-shaft is to receive motion in any suitable way or manner.

I-Iaving thus described my invention, I claim and desire to secure by Letters Patent of the United States- The combination of the shoe having the transverselyarranged spout, supportingbrackets secured upon the inner sides of said shoe at its front end and at the intersecting line of the shoe and the spout, said front brackets being provided with notches in their rear edges and said rear brackets being provided With corresponding notches in their front and rear edges, the riddle extending over the shoe and supported adjustably at its front and rear corners in the notches of said brackets, a concave riddle arranged over the spout and supported at its front corners in the Vsaid rear brackets, a tail-board having rigid connection with the spout and supporting the tail end of said concave riddle, and a beater-shaft mounted rotatively in the sides of the frame over said concave riddle and having beaters or agitators, substantially as set forth.

In testimony that I claim the foregoing as my own I have hereto aflixed my signature in the presence of two Witnesses.

FRIEND TONY PARKHURST.

Witnesses:

W. G. PARDOE, E. E. CHAMBERLAIN. 

